Ruling on buying and selling land

Ruling on selling metals which are in the stores of the company that is keeping them

Buying a foreclosed house if it is sold at auction because the borrower is not able to pay off the riba-based loan

Buying zakaah items after giving them to the poor person

Is it permissible to sell Zamzam water?

If his relatives want particular types of perfume, is it permissible for him to buy them and sell them to them?

He wrote in the contract a price higher than that which was paid, and took it from the neighbour

Buying real estate through the bank

Selling products by instalment for the cash price through the bank

Is It Prohibited to Sell Something For Twice its Original Price?